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US7258351B2 - Quick-action chuck - Google Patents

Quick-action chuck Download PDF

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Publication number
US7258351B2
US7258351B2 US10/814,756 US81475604A US7258351B2 US 7258351 B2 US7258351 B2 US 7258351B2 US 81475604 A US81475604 A US 81475604A US 7258351 B2 US7258351 B2 US 7258351B2
Authority
US
United States
Prior art keywords
quick
base body
chucking
locking device
actuating element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US10/814,756
Other languages
English (en)
Other versions
US20040251641A1 (en
Inventor
Erhard Hoffmann
Joachim Hecht
Siegfried Keusch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102004012434A external-priority patent/DE102004012434A1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KEUSCH, SIEGFRIED, HOFFMANN, ERHARD, HECHT, JOACHIM
Publication of US20040251641A1 publication Critical patent/US20040251641A1/en
Application granted granted Critical
Publication of US7258351B2 publication Critical patent/US7258351B2/en
Adjusted expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
    • B23B31/123—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis with locking arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
    • B23B2231/06—Chucks for handtools having means for opening and closing the jaws using the driving motor of the handtool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
    • B23B2231/38—Keyless chucks for hand tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17615—Obliquely guided reciprocating jaws
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17615—Obliquely guided reciprocating jaws
    • Y10T279/17623—Threaded sleeve and jaw
    • Y10T279/17632—Conical sleeve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17615—Obliquely guided reciprocating jaws
    • Y10T279/17658—Reciprocating jaw advancing sleeve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/32—Means to prevent jaw loosening

Definitions

  • the invention is based on a quick-action chuck.
  • a quick-action chuck of this generic type for a power tool which has a control device for controlling locking devices which serve to absorb a chucking reinforcement force.
  • the quick-action chuck has an axially displaceable actuating element, which is coupled with a pivotably supported knob of the control device. If the actuating element is displaced rearward, in an axial direction remote from a receptacle region of the quick-action chuck, the knob is pivoted, as a result, via a transmission means, a nonpositive-engagement connection for absorbing the chucking reinforcement force is brought about between the locking devices, embodied by cup springs, and a base body of the quick-action chuck.
  • the invention is based on a quick-action chuck, in particular for a power tool, having an actuating element and having a control device which includes at least one means for controlling at least one locking device that serves to absorb a chucking reinforcement force.
  • a positive-engagement connection for absorbing the chucking reinforcement force can be brought about via the locking device which is controllable by the control device.
  • An especially convenient and easily operated quick-action chuck can be achieved.
  • Major actuation forces for the nonpositive fixation of the locking device can be avoided, and low wear of the locking device over a long service life can be achieved.
  • a high impact drilling strength can be achieved, or a tool can be securely fastened with a strong clamping force, suitable for impact drilling operation, in the quick-action chuck.
  • a defined order of method steps can be assured in a simple way, and as a result an actuating device in multiple parts and/or complicated actuation sequences that a user must go through can be avoided.
  • the locking device for establishing the positive-engagement connection is rotatable relative to a base body, and in particular is rotatable in the circumferential direction. Accordingly, the positive-engagement connection can be brought about a rotation of the locking device.
  • the locking spring can be formed by various types of spring that appear suitable to one skilled in the art, such as a helical compression spring and so forth. However, if the locking spring has an essentially annular shape, it can be integrated in an especially space-saving way.
  • the tool can be clamped indirectly by way of a spring means that is actuatable by the actuating element, then the reliability of the chuck can be increased.
  • the spring means for indirectly clamping the tool has an essentially annular shape, then the arrangement is relatively invulnerable to dust.
  • the spring means favorably has at least two detent elements, opposite one another circumferentially, for snapping into the actuating element. Tool diameters of very different sizes can advantageously be chucked, ranging for instance from 1.5 mm up to 13 mm.
  • the actuating element can be operatively uncoupled from a locking device over at least once actuation region. Close tolerances with the attendant unwanted effects, such as high production costs, vulnerability to dirt, and so forth, can be avoided.
  • locking can be done first and then chucking.
  • a structurally simple embodiment can be attained in particular if the actuating element can be coupled to the means and uncoupled via a locking spring.
  • actuating element for chucking a tool is supported rotatably, then advantageous gear ratios can be attained structurally simply, in particular via threaded connections, and major clamping forces can be achieved with low actuation forces.
  • control device it is simple to attain that the actuating element advantageously needs to be rotated less than 250° for the chucking, making especially convenient chucking of a tool attainable.
  • lever mechanisms and so forth instead of threaded connections.
  • the actuating element is supported displaceably in the axial direction, and a result an axial actuation is associated with a fast adjustment, and simple, self-explanatory use can be attained.
  • the base body has at least one slide face, on which the locking device is axially displaceable.
  • the quick-action chuck has at least one chucking jaw that is loaded in the axial direction via a spring element in at least one operating position.
  • An automatic closure of the quick-action chuck up to a certain degree can be attained, and convenience can be enhanced.
  • the quick-action chuck has at least one chucking jaw that in at least operating position is loaded via a means in the radial direction, in particular radially inward.
  • the means may be embodied by a transmission means with an oblique face and/or a spring means, and so forth.
  • a power tool with a quick-action chuck in which a tool can be chucked via a spring means that is actuatable by the actuating element.
  • the invention can be employed especially advantageously in power drills, power impact drills, and/or power screwdrivers.
  • FIG. 1 a power impact drill, with a quick-action chuck of the invention
  • FIG. 2 a longitudinal section through a quick-action chuck of the invention obliquely from above, with a tool that has a small diameter;
  • FIG. 3 a detail of the quick-action chuck of FIG. 2 , with a visible spring means, for chucking the tool;
  • FIG. 4 a cross section through the quick-action chuck taken along the line IV-IV;
  • FIG. 5 a cross section through the quick-action chuck taken along the line V-V;
  • FIG. 6 a cross section through the quick-action chuck of FIG. 4 , with the locking spring snapped into place;
  • FIG. 7 a cross section through the quick-action chuck of FIG. 5 , with the actuating element rotated farther by 90° clockwise;
  • FIG. 8 a cross section through the quick-action chuck with the tool locked and chucked
  • FIG. 9 an elevation view of a preferred base body
  • FIG. 10 an elevation view of a preferred locking element.
  • FIG. 1 shows a power impact drill with a quick-action chuck of the invention, with a tool 34 that can be locked and chucked with the aid of an actuating element 20 .
  • the actuating element 20 is surrounded in some regions by a covering bush 58 .
  • the quick-action chuck described in detail below in conjunction with FIGS. 2 through 8 has an actuating element 20 , which can be operatively uncoupled, over an actuation region, from a fixation bush 36 , in which locking devices 10 are retained, the uncoupling being done specifically via a locking spring 22 ( FIG. 4 ) embodied by a bandlike spring steel, which has an essentially annular shape and is disposed in a circumferential groove of the fixation bush 36 .
  • the fixation bush 36 surrounds a base body 32 and on its end near the tool it has a smaller circumference than on its end remote from the tool.
  • “Near” and “remote from” the tool are understood to mean the region of the fixation bush 36 that is located close to or away from the installed tool 34 , that is, near or far from chucking jaws 36 that are provided for the tool 34 .
  • the fixation bush 36 is surrounded by a chucking bush 50 embodied as a nut.
  • both its outer circumference and its inside diameter are increased, and a step-shaped enlargement is embodied approximately in the axial center of the fixation bush 36 .
  • one or more locking devices 10 are disposed on the circumference of the base body 32 .
  • the fixation bush 36 fits around a retaining ring 44 , which in conjunction with a securing ring 46 prevents the locking devices 10 from falling out.
  • the fixation bush 36 is surrounded by a spring means 12 , embodied as a detent spring, whose function will be described in further detail below in conjunction with FIG. 5 .
  • the locking devices 10 are located above a slide face, not identified by reference numeral, of the base body 32 .
  • two locking devices 10 are disposed above corresponding slide faces.
  • the actuating element 20 is pulled axially to the rear, in the direction away from the free end, as a result of which, via the guide bush 42 , chucking jaws 26 coupled by positive engagement to the actuating element 20 in the axial direction are guided, in the direction away from the free end, to the rear and radially outward.
  • the chucking jaws 26 open, and the tool 34 can be inserted.
  • the guide bush 42 is supported axially displaceably on the base body 32 and is connected to the base body 32 in a manner fixed against relative rotation via a tongue and groove connection, not shown. It is also possible for the guide bush 42 to be supported rotatably on the base body 32 and for a tangential guidance of the guide bush 42 to be achieved via the chucking jaws 26 .
  • the actuating element is thrust in the direction of the free end of the quick-action chuck via a spring element 24 embodied as a helical compression spring.
  • the spring element 24 embodied as a helical compression spring is braced on the covering bush 58 and acts, via the retaining ring 44 , on the actuating element 20 , which in turn acts on the chucking jaws 26 with an axial force, via the axial bearing 52 and the guide bush 42 .
  • the chucking jaws 26 are guided radially inward along oblique faces of recesses in the base body 32 and secure the tool 34 with a low clamping force.
  • FIG. 3 a detail of the quick-action chuck of FIG. 2 is shown. The arrangement is rotated such that both the spring means 12 for chucking the tool and the locking spring 22 , which serves to lock the locking devices 10 , are visible.
  • the essentially annular locking spring 22 is passed radially inward through the fixation bush 36 .
  • FIG. 4 shows a cross section through the quick-action chuck taken along the line IV-IV in FIG. 3 ; the viewing direction is from the end of the fixation bush 36 far from the tool toward the end near the tool.
  • the fixation bush 36 is rotated via the locking spring 22 , which is retained in a groove 66 in the actuating element 20 , and the locking devices 10 are thus displaced along the circumference of the base body 32 .
  • a lug 30 forms a stop for the locking spring 22 in the groove 66 .
  • the locking devices 10 rest on a slide face 64 of the base body 32 , on which they are axially displaceable.
  • the chucking bush 50 likewise rotates in the process.
  • the locking devices 10 engage a set of teeth 48 of the base body 32 ( FIG. 9 ). As a result of meshing with the set of teeth 48 , the locking devices 10 are axially fixed on the base body 32 .
  • FIG. 5 shows a cross section through the quick-action chuck taken along the line V-V of FIG. 3 .
  • the spring means 12 embodied essentially annularly as a detent spring has two detent elements 14 , 16 , approximately opposite one another on the circumference of the base body 32 .
  • the detent element 14 engages a groove 70 in the actuating element 20 and, with its side on the right in the drawing, rests on an edge 78 of a lug 76 of the actuating element 20 , which has a further edge 80 that is remote in the circumferential direction from the detent element 14 .
  • the second detent element 16 engages a groove 72 in the actuating element 20 and has a first stop 82 and a second stop 84 . Remote from the detent element 16 , the groove 72 is defined by an edge 74 of a lug 86 .
  • the locking spring 22 has engaged the groove 28 in the base body 32 , then the actuating element 20 , for manually chucking the tool 34 with a clamping force appropriate for operation, is rotated onward counterclockwise, viewed in the direction of the free end.
  • FIG. 6 analogously to FIG. 4 .
  • the locking spring 22 has snapped into the groove 28 of the base body 32 , whereupon the locking devices 10 are fixed both axially and radially.
  • the chucking bush 50 can be driven by the actuating element 20 via the spring element 24 embodied as a detent spring. The chucking of the tool 34 thus begins.
  • the terminal position of the elements and of the actuating element 20 upon chucking of the tool 34 is shown in FIG. 8 .
  • the locking devices 10 have interlocked with the base body 32 , and the spring element 12 secures the actuating element 20 .
  • the actuating element 20 is rotated clockwise, viewed in the direction of the free end of the quick-action chuck.
  • the securing of the actuating element 20 is undone, and the edge 80 of the lug 76 snaps onto the detent element 14 .
  • the lug 86 releases the second detent element 16 , and the detent element 18 moves out of engagement with the fixation bush 36 .
  • the chucking bush 50 rotates relative to the fixation bush 36 , and the chucking is undone.
  • the locking spring 22 snaps into the groove 66 , and the locking of the locking devices 10 is undone; these locking devices are thrust along the slide face 64 of the base body 32 .
  • FIG. 9 shows a preferred base body 32 .
  • the base body 32 has a cylindrical region, part of whose circumference is provided with a set of teeth 48 with which locking devices 10 , not shown, can mesh.
  • the cylindrical region moreover has at least one slide face 64 , which is flattened and provided with a smooth surface.
  • a further such slide face 64 is provided, so that for instance two locking devices 10 may be provided.
  • FIG. 10 shows a preferred locking device 10 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Percussive Tools And Related Accessories (AREA)
US10/814,756 2003-04-04 2004-03-31 Quick-action chuck Expired - Fee Related US7258351B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10315407.8 2003-04-04
DE10315407 2003-04-04
DE102004012434.5 2004-03-13
DE102004012434A DE102004012434A1 (de) 2003-04-04 2004-03-13 Schnellspannfutter

Publications (2)

Publication Number Publication Date
US20040251641A1 US20040251641A1 (en) 2004-12-16
US7258351B2 true US7258351B2 (en) 2007-08-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
US10/814,756 Expired - Fee Related US7258351B2 (en) 2003-04-04 2004-03-31 Quick-action chuck

Country Status (4)

Country Link
US (1) US7258351B2 (fr)
EP (1) EP1464426B1 (fr)
CN (1) CN100413619C (fr)
DE (1) DE502004005307D1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060027979A1 (en) * 2004-08-03 2006-02-09 Yang Gui M Lockable chuck
US20070074948A1 (en) * 2005-09-28 2007-04-05 Shandong Weida Machinery Co., Ltd. One-way clutch and a clamping structure for a handled tool using the same
US20070252345A1 (en) * 2005-03-16 2007-11-01 Etablissements Amyot S.A. Tool-carrier chuck for rotating machine, furnished with locking means
US8915499B2 (en) 2010-11-09 2014-12-23 Black & Decker Inc. Universal accessories for oscillating power tools
US8925931B2 (en) 2010-04-29 2015-01-06 Black & Decker Inc. Oscillating tool
US9149923B2 (en) 2010-11-09 2015-10-06 Black & Decker Inc. Oscillating tools and accessories
US9186770B2 (en) 2010-04-29 2015-11-17 Black & Decker Inc. Oscillating tool attachment feature
USD814900S1 (en) 2017-01-16 2018-04-10 Black & Decker Inc. Blade for oscillating power tools
USD832666S1 (en) 2012-07-16 2018-11-06 Black & Decker Inc. Oscillating saw blade
US20190111555A1 (en) * 2017-10-18 2019-04-18 Milwaukee Electric Tool Corporation Chuck assembly for a rotary power tool
US10265778B2 (en) 2017-01-16 2019-04-23 Black & Decker Inc. Accessories for oscillating power tools
US10512971B2 (en) 2013-08-28 2019-12-24 Positec Power Tools (Suzhou) Co., Ltd. Power tool and operation method for quick locking and releasing working attachment thereof

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1464425B1 (fr) * 2003-04-04 2007-03-28 Robert Bosch Gmbh Mandrin à action rapide
US7644930B2 (en) * 2005-04-20 2010-01-12 Black & Decker Inc. Mechanism for providing residual thrust load on chuck actuating screw
US7478979B2 (en) * 2005-04-27 2009-01-20 Eastway Fair Company Limited Rotatable chuck
US7481608B2 (en) * 2005-04-27 2009-01-27 Eastway Fair Company Limited Rotatable chuck
US7637510B2 (en) 2005-10-12 2009-12-29 Shandong Weida Machinery Company Limited Chuck with gripping mechanism stop
EP3106251B1 (fr) 2011-04-05 2021-02-17 Milwaukee Electric Tool Corporation Mandrin à auto-dimensionnement
DE102012211907A1 (de) 2012-07-09 2014-01-09 Robert Bosch Gmbh Drehschlagschrauber mit einem Schlagwerk
DE102016201530A1 (de) 2016-02-02 2017-08-03 Deutsches Zentrum für Luft- und Raumfahrt e.V. Andockstation für mobile Roboter sowie Verfahren zum Betreiben eines mobilen Roboters
CN113119362B (zh) * 2021-04-20 2023-01-13 山东玲珑机电有限公司 一种快换式硫化胶囊装夹装置

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EP1380372A1 (fr) 2002-07-08 2004-01-14 The Boeing Company Mandrin à action rapide
US6691799B2 (en) * 2001-06-02 2004-02-17 Robert Bosch Gmbh Tool holder
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US1907553A (en) * 1932-09-13 1933-05-09 American Mach & Foundry Automatic chuck
US2253345A (en) * 1939-08-12 1941-08-19 Carl A Palmgren Chuck
US2544088A (en) 1943-12-31 1951-03-06 Hollis Albert Charles Drill chuck
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US4627627A (en) * 1984-06-15 1986-12-09 Roehm Guenter H Percussion or impact drill chuck
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US5741016A (en) 1996-10-02 1998-04-21 Power Tool Holders Incorporated Chuck
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US6257596B1 (en) * 1999-08-18 2001-07-10 Wen Yung Yang Self Locking device for power tool
US6247706B1 (en) * 1999-11-03 2001-06-19 Chum Power Machinery Corp. Self-locking chuck
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US10207385B2 (en) 2010-04-29 2019-02-19 Black & Decker Inc. Accessories for oscillating power tools
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US11097396B2 (en) 2010-04-29 2021-08-24 Black & Decker Inc. Accessories for oscillating power tools
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US9149923B2 (en) 2010-11-09 2015-10-06 Black & Decker Inc. Oscillating tools and accessories
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USD871185S1 (en) 2017-01-16 2019-12-31 Black & Decker Inc. Blade for oscillating power tools
USD924030S1 (en) 2017-01-16 2021-07-06 Black & Decker Inc. Blade for oscillating power tools
USD814900S1 (en) 2017-01-16 2018-04-10 Black & Decker Inc. Blade for oscillating power tools
US10265778B2 (en) 2017-01-16 2019-04-23 Black & Decker Inc. Accessories for oscillating power tools
US12070803B2 (en) 2017-01-16 2024-08-27 Black & Decker Inc. Accessories for oscillating power tools
US11084105B2 (en) * 2017-10-18 2021-08-10 Milwaukee Electric Tool Corporation Chuck assembly for a rotary power tool
US20190111555A1 (en) * 2017-10-18 2019-04-18 Milwaukee Electric Tool Corporation Chuck assembly for a rotary power tool

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Publication number Publication date
DE502004005307D1 (de) 2007-12-06
CN1541795A (zh) 2004-11-03
EP1464426A3 (fr) 2006-03-01
CN100413619C (zh) 2008-08-27
EP1464426A2 (fr) 2004-10-06
EP1464426B1 (fr) 2007-10-24
US20040251641A1 (en) 2004-12-16

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